U
    d                     @   sZ   d dl Z d dlmZ d dlZddlmZmZ G dd dZe jfddZ	d	d
 Z
e
 ZdS )    NLock   )mmap_key
MmapedDictc                   @   sD   e Zd ZdZdZdd Zdd Zdd Zd	d
 Zdd Z	dd Z
dS )
MutexValuezA float protected by a mutex.Fc                 K   s   d| _ d | _t | _d S )Ng        )_value	_exemplarr   _lock)selftypmetric_namename
labelnameslabelvalues	help_textkwargs r   </tmp/pip-unpacked-wheel-2bcd7zt2/prometheus_client/values.py__init__   s    zMutexValue.__init__c              	   C   s$   | j  |  j|7  _W 5 Q R X d S Nr
   r   r   amountr   r   r   inc   s    zMutexValue.incc              	   C   s   | j  || _W 5 Q R X d S r   r   r   valuer   r   r   set   s    zMutexValue.setc              	   C   s   | j  || _W 5 Q R X d S r   r
   r	   r   Zexemplarr   r   r   set_exemplar   s    zMutexValue.set_exemplarc              
   C   s$   | j  | jW  5 Q R  S Q R X d S r   r   r   r   r   r   get   s    zMutexValue.getc              
   C   s$   | j  | jW  5 Q R  S Q R X d S r   r   r!   r   r   r   get_exemplar"   s    zMutexValue.get_exemplarN)__name__
__module____qualname____doc___multiprocessr   r   r   r    r"   r#   r   r   r   r   r      s   r   c                    s6   i  g d it  G  fddd}|S )a8  Returns a MmapedValue class based on a process_identifier function.

    The 'process_identifier' function MUST comply with this simple rule:
    when called in simultaneously running processes it MUST return distinct values.

    Using a different function than the default 'os.getpid' is at your own risk.
    r   c                       sx   e Zd ZdZdZdfdd	Z fddZ fdd	Zfd
dZfddZ	dd Z
fddZdd ZdS )z&MultiProcessValue.<locals>.MmapedValuezAA float protected by a mutex backed by a per-process mmaped file.T c           	   	      sr   |||||||f| _ dtjkrDdtjkrDtjd tjd< tdt    |   |   |  W 5 Q R X d S )Nprometheus_multiproc_dirPROMETHEUS_MULTIPROC_DIRzpprometheus_multiproc_dir variable has been deprecated in favor of the upper case naming PROMETHEUS_MULTIPROC_DIR)	_paramsosenvironwarningswarnDeprecationWarning"_MmapedValue__check_for_pid_change_MmapedValue__resetappend)	r   r   r   r   r   r   r   multiprocess_moder   )lockvaluesr   r   r   <   s    z/MultiProcessValue.<locals>.MmapedValue.__init__c           
         s   | j \}}}}}}}|dkr*|d | }n|}| krdtjtjdd|d }	t|	 |<  | | _t	|||||| _
| j| j
| _d S )NZgauge_r+   z{}_{}.dbr   )r,   r-   pathjoinr.   r"   formatr   _filer   _keyZ
read_valuer   )
r   r   r   r   r   r   r   r5   Zfile_prefixfilename)filespidr   r   Z__resetG   s    

z.MultiProcessValue.<locals>.MmapedValue.__resetc                    sN    }d |krJ|d<    D ]}|  q"   D ]}|  q<d S )Nr   )r7   closeclearr3   )r   Z
actual_pidfr   )r?   r@   process_identifierr7   r   r   Z__check_for_pid_changeW   s    
z=MultiProcessValue.<locals>.MmapedValue.__check_for_pid_changec              	      s<    . |    |  j|7  _| j| j| j W 5 Q R X d S r   r2   r   r<   write_valuer=   r   r6   r   r   r   b   s    z*MultiProcessValue.<locals>.MmapedValue.incc              	      s4    & |    || _| j| j| j W 5 Q R X d S r   rE   r   rG   r   r   r   h   s    z*MultiProcessValue.<locals>.MmapedValue.setc                 S   s   d S r   r   r   r   r   r   r    n   s    z3MultiProcessValue.<locals>.MmapedValue.set_exemplarc              
      s*     |    | jW  5 Q R  S Q R X d S r   )r2   r   r!   rG   r   r   r"   r   s    z*MultiProcessValue.<locals>.MmapedValue.getc                 S   s   d S r   r   r!   r   r   r   r#   w   s    z3MultiProcessValue.<locals>.MmapedValue.get_exemplarN)r)   )r$   r%   r&   r'   r(   r   r3   r2   r   r   r    r"   r#   r   r?   r6   r@   rD   r7   r   r   MmapedValue7   s   rI   r   )rD   rI   r   rH   r   MultiProcessValue'   s    
DrJ   c                   C   s"   dt jksdt jkrt S tS d S )Nr*   r+   )r-   r.   rJ   r   r   r   r   r   get_value_class~   s    rK   )r-   	threadingr   r/   Z	mmap_dictr   r   r   getpidrJ   rK   Z
ValueClassr   r   r   r   <module>   s   W